And in England when they fought the Nazis.
Where would the world be without Britain ..by winning the Battle of Britain the Nazis were kept at bay and could not invade British shores . In 1944 the allies launched their own invasion of continental Europe from British shores and with the help of the Soviets in the east defeated the evil that was Nazi Germany.
Are we not forgetting the fact that the large majority of forces who landed in Normandy on D-day and fought their way through Europe to Germany were Americans?
Entrenched positions, hit-and-run tactics, defined fields of fire are not imaginary lines.
You could easily poke holes in my argument, as there are many flaws, yet you fail to find the proper line.